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Sonder CPA
Fred Pennell established Pennell CPA in 2012. Thomas Renner purchased Pennell's interest in November 2023 and rebranded the firm Sonder CPA while retaining its...
Sonder CPA
Fred Pennell established Pennell CPA in 2012. Thomas Renner purchased Pennell's interest in November 2023 and rebranded the firm Sonder CPA while retaining its multi-family office orientation. The firm delivers tax preparation, accounting, and management advisory services. Engagements cover individuals, partnerships, corporations, and trusts. Work occurs on-site, off-site, or virtually. Geographic scope remains limited to North America, centered on West Michigan clients. Renner serves on the boards of the Ada Business Association and West Michigan Spartans. He completed the Leadership Grand Rapids program through the Grand Rapids Chamber of Commerce. No additional offices or adjacent vehicles are disclosed. Ownership transfer in 2023 created a direct principal-led structure without external fund vehicles or outside capital commitments.
General information
Firm type
Multi Family Office
Year founded
2012
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Grand Rapids
Corporate office
Grand Rapids, United States
Principals
Thomas Renner
Owner
Fred Pennell
Founder
Sector focus
Frequently asked questions
Who runs investment decisions at Sonder CPA?
Thomas Renner serves as owner and directs client engagements. Fred Pennell founded the firm in 2012 and sold his interest in November 2023.
Is Sonder CPA structured as a single family office or does it operate more like a venture firm?
The firm functions as a multi-family office serving multiple high-net-worth families. It does not deploy capital into venture vehicles or external funds.
What services does Sonder CPA provide beyond traditional accounting?
The firm supplies tax preparation, on-site or virtual accounting, and management advisory for complex business situations. Engagements also address estate and philanthropic coordination.
Where does Sonder CPA maintain its primary operations?
Headquarters remain in Grand Rapids, Michigan. All disclosed activity occurs within North America.
How is Sonder CPA related to Pinnacle CPA + Advisors?
Fred Pennell and former Pennell CPA manager Charles Gottschall now operate Pinnacle CPA + Advisors after the 2023 ownership transfer.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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